src/video/windib/SDL_dibvideo.c
author Sam Lantinga <slouken@libsdl.org>
Sat, 24 Jun 2006 04:30:01 +0000
changeset 1882 339d733e3699
parent 1881 61f86f36afb9
child 1895 c121d94672cb
child 3868 b2f59aadec0d
permissions -rw-r--r--
Fixed bug #258

Account for the menu height in AdjustWindowRectEx()
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2006 Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Lesser General Public
     7     License as published by the Free Software Foundation; either
     8     version 2.1 of the License, or (at your option) any later version.
     9 
    10     This library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Lesser General Public License for more details.
    14 
    15     You should have received a copy of the GNU Lesser General Public
    16     License along with this library; if not, write to the Free Software
    17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
    18 
    19     Sam Lantinga
    20     slouken@libsdl.org
    21 */
    22 #include "SDL_config.h"
    23 
    24 #define WIN32_LEAN_AND_MEAN
    25 #include <windows.h>
    26 
    27 /* Not yet in the mingw32 cross-compile headers */
    28 #ifndef CDS_FULLSCREEN
    29 #define CDS_FULLSCREEN	4
    30 #endif
    31 
    32 #include "SDL_syswm.h"
    33 #include "../SDL_sysvideo.h"
    34 #include "../SDL_pixels_c.h"
    35 #include "../../events/SDL_sysevents.h"
    36 #include "../../events/SDL_events_c.h"
    37 #include "SDL_dibvideo.h"
    38 #include "../wincommon/SDL_syswm_c.h"
    39 #include "../wincommon/SDL_sysmouse_c.h"
    40 #include "SDL_dibevents_c.h"
    41 #include "../wincommon/SDL_wingl_c.h"
    42 
    43 #ifdef _WIN32_WCE
    44 #define NO_GETDIBITS
    45 #define NO_GAMMA_SUPPORT
    46   #if _WIN32_WCE < 420
    47     #define NO_CHANGEDISPLAYSETTINGS
    48   #else
    49     #define ChangeDisplaySettings(lpDevMode, dwFlags) ChangeDisplaySettingsEx(NULL, (lpDevMode), 0, (dwFlags), 0)
    50   #endif
    51 #endif
    52 #ifndef WS_MAXIMIZE
    53 #define WS_MAXIMIZE	0
    54 #endif
    55 #ifndef WS_THICKFRAME
    56 #define WS_THICKFRAME	0
    57 #endif
    58 #ifndef SWP_NOCOPYBITS
    59 #define SWP_NOCOPYBITS	0
    60 #endif
    61 #ifndef PC_NOCOLLAPSE
    62 #define PC_NOCOLLAPSE	0
    63 #endif
    64 
    65 #ifdef _WIN32_WCE
    66 // defined and used in SDL_sysevents.c
    67 extern HINSTANCE aygshell;
    68 #endif
    69 
    70 /* Initialization/Query functions */
    71 static int DIB_VideoInit(_THIS, SDL_PixelFormat *vformat);
    72 static SDL_Rect **DIB_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
    73 SDL_Surface *DIB_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
    74 static int DIB_SetColors(_THIS, int firstcolor, int ncolors,
    75 			 SDL_Color *colors);
    76 static void DIB_CheckGamma(_THIS);
    77 void DIB_SwapGamma(_THIS);
    78 void DIB_QuitGamma(_THIS);
    79 int DIB_SetGammaRamp(_THIS, Uint16 *ramp);
    80 int DIB_GetGammaRamp(_THIS, Uint16 *ramp);
    81 static void DIB_VideoQuit(_THIS);
    82 
    83 /* Hardware surface functions */
    84 static int DIB_AllocHWSurface(_THIS, SDL_Surface *surface);
    85 static int DIB_LockHWSurface(_THIS, SDL_Surface *surface);
    86 static void DIB_UnlockHWSurface(_THIS, SDL_Surface *surface);
    87 static void DIB_FreeHWSurface(_THIS, SDL_Surface *surface);
    88 
    89 /* Windows message handling functions */
    90 static void DIB_RealizePalette(_THIS);
    91 static void DIB_PaletteChanged(_THIS, HWND window);
    92 static void DIB_WinPAINT(_THIS, HDC hdc);
    93 
    94 /* helper fn */
    95 static int DIB_SussScreenDepth();
    96 
    97 /* DIB driver bootstrap functions */
    98 
    99 static int DIB_Available(void)
   100 {
   101 	return(1);
   102 }
   103 
   104 static void DIB_DeleteDevice(SDL_VideoDevice *device)
   105 {
   106 	if ( device ) {
   107 		if ( device->hidden ) {
   108 			SDL_free(device->hidden);
   109 		}
   110 		if ( device->gl_data ) {
   111 			SDL_free(device->gl_data);
   112 		}
   113 		SDL_free(device);
   114 	}
   115 }
   116 
   117 static SDL_VideoDevice *DIB_CreateDevice(int devindex)
   118 {
   119 	SDL_VideoDevice *device;
   120 
   121 	/* Initialize all variables that we clean on shutdown */
   122 	device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
   123 	if ( device ) {
   124 		SDL_memset(device, 0, (sizeof *device));
   125 		device->hidden = (struct SDL_PrivateVideoData *)
   126 				SDL_malloc((sizeof *device->hidden));
   127 		device->gl_data = (struct SDL_PrivateGLData *)
   128 				SDL_malloc((sizeof *device->gl_data));
   129 	}
   130 	if ( (device == NULL) || (device->hidden == NULL) ||
   131 		                 (device->gl_data == NULL) ) {
   132 		SDL_OutOfMemory();
   133 		DIB_DeleteDevice(device);
   134 		return(NULL);
   135 	}
   136 	SDL_memset(device->hidden, 0, (sizeof *device->hidden));
   137 	SDL_memset(device->gl_data, 0, (sizeof *device->gl_data));
   138 
   139 	/* Set the function pointers */
   140 	device->VideoInit = DIB_VideoInit;
   141 	device->ListModes = DIB_ListModes;
   142 	device->SetVideoMode = DIB_SetVideoMode;
   143 	device->UpdateMouse = WIN_UpdateMouse;
   144 	device->SetColors = DIB_SetColors;
   145 	device->UpdateRects = NULL;
   146 	device->VideoQuit = DIB_VideoQuit;
   147 	device->AllocHWSurface = DIB_AllocHWSurface;
   148 	device->CheckHWBlit = NULL;
   149 	device->FillHWRect = NULL;
   150 	device->SetHWColorKey = NULL;
   151 	device->SetHWAlpha = NULL;
   152 	device->LockHWSurface = DIB_LockHWSurface;
   153 	device->UnlockHWSurface = DIB_UnlockHWSurface;
   154 	device->FlipHWSurface = NULL;
   155 	device->FreeHWSurface = DIB_FreeHWSurface;
   156 	device->SetGammaRamp = DIB_SetGammaRamp;
   157 	device->GetGammaRamp = DIB_GetGammaRamp;
   158 #if SDL_VIDEO_OPENGL
   159 	device->GL_LoadLibrary = WIN_GL_LoadLibrary;
   160 	device->GL_GetProcAddress = WIN_GL_GetProcAddress;
   161 	device->GL_GetAttribute = WIN_GL_GetAttribute;
   162 	device->GL_MakeCurrent = WIN_GL_MakeCurrent;
   163 	device->GL_SwapBuffers = WIN_GL_SwapBuffers;
   164 #endif
   165 	device->SetCaption = WIN_SetWMCaption;
   166 	device->SetIcon = WIN_SetWMIcon;
   167 	device->IconifyWindow = WIN_IconifyWindow;
   168 	device->GrabInput = WIN_GrabInput;
   169 	device->GetWMInfo = WIN_GetWMInfo;
   170 	device->FreeWMCursor = WIN_FreeWMCursor;
   171 	device->CreateWMCursor = WIN_CreateWMCursor;
   172 	device->ShowWMCursor = WIN_ShowWMCursor;
   173 	device->WarpWMCursor = WIN_WarpWMCursor;
   174 	device->CheckMouseMode = WIN_CheckMouseMode;
   175 	device->InitOSKeymap = DIB_InitOSKeymap;
   176 	device->PumpEvents = DIB_PumpEvents;
   177 
   178 	/* Set up the windows message handling functions */
   179 	WIN_RealizePalette = DIB_RealizePalette;
   180 	WIN_PaletteChanged = DIB_PaletteChanged;
   181 	WIN_WinPAINT = DIB_WinPAINT;
   182 	HandleMessage = DIB_HandleMessage;
   183 
   184 	device->free = DIB_DeleteDevice;
   185 
   186 	/* We're finally ready */
   187 	return device;
   188 }
   189 
   190 VideoBootStrap WINDIB_bootstrap = {
   191 	"windib", "Win95/98/NT/2000/CE GDI",
   192 	DIB_Available, DIB_CreateDevice
   193 };
   194 
   195 static int cmpmodes(const void *va, const void *vb)
   196 {
   197     SDL_Rect *a = *(SDL_Rect **)va;
   198     SDL_Rect *b = *(SDL_Rect **)vb;
   199     if ( a->w == b->w )
   200         return b->h - a->h;
   201     else
   202         return b->w - a->w;
   203 }
   204 
   205 static int DIB_AddMode(_THIS, int bpp, int w, int h)
   206 {
   207 	SDL_Rect *mode;
   208 	int i, index;
   209 	int next_mode;
   210 
   211 	/* Check to see if we already have this mode */
   212 	if ( bpp < 8 ) {  /* Not supported */
   213 		return(0);
   214 	}
   215 	index = ((bpp+7)/8)-1;
   216 	for ( i=0; i<SDL_nummodes[index]; ++i ) {
   217 		mode = SDL_modelist[index][i];
   218 		if ( (mode->w == w) && (mode->h == h) ) {
   219 			return(0);
   220 		}
   221 	}
   222 
   223 	/* Set up the new video mode rectangle */
   224 	mode = (SDL_Rect *)SDL_malloc(sizeof *mode);
   225 	if ( mode == NULL ) {
   226 		SDL_OutOfMemory();
   227 		return(-1);
   228 	}
   229 	mode->x = 0;
   230 	mode->y = 0;
   231 	mode->w = w;
   232 	mode->h = h;
   233 
   234 	/* Allocate the new list of modes, and fill in the new mode */
   235 	next_mode = SDL_nummodes[index];
   236 	SDL_modelist[index] = (SDL_Rect **)
   237 	       SDL_realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *));
   238 	if ( SDL_modelist[index] == NULL ) {
   239 		SDL_OutOfMemory();
   240 		SDL_nummodes[index] = 0;
   241 		SDL_free(mode);
   242 		return(-1);
   243 	}
   244 	SDL_modelist[index][next_mode] = mode;
   245 	SDL_modelist[index][next_mode+1] = NULL;
   246 	SDL_nummodes[index]++;
   247 
   248 	return(0);
   249 }
   250 
   251 static HPALETTE DIB_CreatePalette(int bpp)
   252 {
   253 /*	RJR: March 28, 2000
   254 	moved palette creation here from "DIB_VideoInit" */
   255 
   256 	HPALETTE handle = NULL;
   257 	
   258 	if ( bpp <= 8 )
   259 	{
   260 		LOGPALETTE *palette;
   261 		HDC hdc;
   262 		int ncolors;
   263 		int i;
   264 
   265 		ncolors = 1;
   266 		for ( i=0; i<bpp; ++i ) {
   267 			ncolors *= 2;
   268 		}
   269 		palette = (LOGPALETTE *)SDL_malloc(sizeof(*palette)+
   270 					ncolors*sizeof(PALETTEENTRY));
   271 		palette->palVersion = 0x300;
   272 		palette->palNumEntries = ncolors;
   273 		hdc = GetDC(SDL_Window);
   274 		GetSystemPaletteEntries(hdc, 0, ncolors, palette->palPalEntry);
   275 		ReleaseDC(SDL_Window, hdc);
   276 		handle = CreatePalette(palette);
   277 		SDL_free(palette);
   278 	}
   279 	
   280 	return handle;
   281 }
   282 
   283 int DIB_VideoInit(_THIS, SDL_PixelFormat *vformat)
   284 {
   285 #ifndef NO_CHANGEDISPLAYSETTINGS
   286 	int i;
   287 	DEVMODE settings;
   288 #endif
   289 
   290 	/* Create the window */
   291 	if ( DIB_CreateWindow(this) < 0 ) {
   292 		return(-1);
   293 	}
   294 
   295 #if !SDL_AUDIO_DISABLED
   296 	DX5_SoundFocus(SDL_Window);
   297 #endif
   298 
   299 	/* Determine the screen depth */
   300 	vformat->BitsPerPixel = DIB_SussScreenDepth();
   301 	switch (vformat->BitsPerPixel) {
   302 		case 15:
   303 			vformat->Rmask = 0x00007c00;
   304 			vformat->Gmask = 0x000003e0;
   305 			vformat->Bmask = 0x0000001f;
   306 			vformat->BitsPerPixel = 16;
   307 			break;
   308 		case 16:
   309 			vformat->Rmask = 0x0000f800;
   310 			vformat->Gmask = 0x000007e0;
   311 			vformat->Bmask = 0x0000001f;
   312 			break;
   313 		case 24:
   314 		case 32:
   315 			/* GDI defined as 8-8-8 */
   316 			vformat->Rmask = 0x00ff0000;
   317 			vformat->Gmask = 0x0000ff00;
   318 			vformat->Bmask = 0x000000ff;
   319 			break;
   320 		default:
   321 			break;
   322 	}
   323 
   324 	/* See if gamma is supported on this screen */
   325 	DIB_CheckGamma(this);
   326 
   327 #ifndef NO_CHANGEDISPLAYSETTINGS
   328 
   329 	settings.dmSize = sizeof(DEVMODE);
   330 	settings.dmDriverExtra = 0;
   331 #ifdef _WIN32_WCE
   332 	settings.dmFields = DM_DISPLAYQUERYORIENTATION;
   333 	this->hidden->supportRotation = ChangeDisplaySettingsEx(NULL, &settings, NULL, CDS_TEST, NULL) == DISP_CHANGE_SUCCESSFUL;
   334 #endif
   335 	/* Query for the desktop resolution */
   336 	EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &SDL_desktop_mode);
   337 	this->info.current_w = SDL_desktop_mode.dmPelsWidth;
   338 	this->info.current_h = SDL_desktop_mode.dmPelsHeight;
   339 
   340 	/* Query for the list of available video modes */
   341 	for ( i=0; EnumDisplaySettings(NULL, i, &settings); ++i ) {
   342 		DIB_AddMode(this, settings.dmBitsPerPel,
   343 			settings.dmPelsWidth, settings.dmPelsHeight);
   344 #ifdef _WIN32_WCE		
   345 		if( this->hidden->supportRotation )
   346 			DIB_AddMode(this, settings.dmBitsPerPel,
   347 				settings.dmPelsHeight, settings.dmPelsWidth);
   348 #endif
   349 	}
   350 	/* Sort the mode lists */
   351 	for ( i=0; i<NUM_MODELISTS; ++i ) {
   352 		if ( SDL_nummodes[i] > 0 ) {
   353 			SDL_qsort(SDL_modelist[i], SDL_nummodes[i], sizeof *SDL_modelist[i], cmpmodes);
   354 		}
   355 	}
   356 #else
   357 	// WinCE and fullscreen mode:
   358 	// We use only vformat->BitsPerPixel that allow SDL to
   359 	// emulate other bpp (8, 32) and use triple buffer, 
   360 	// because SDL surface conversion is much faster than the WinCE one.
   361 	// Although it should be tested on devices with graphics accelerator.
   362 
   363 	DIB_AddMode(this, vformat->BitsPerPixel,
   364 			GetDeviceCaps(GetDC(NULL), HORZRES), 
   365 			GetDeviceCaps(GetDC(NULL), VERTRES));
   366 
   367 #endif /* !NO_CHANGEDISPLAYSETTINGS */
   368 
   369 	/* Grab an identity palette if we are in a palettized mode */
   370 	if ( vformat->BitsPerPixel <= 8 ) {
   371 	/*	RJR: March 28, 2000
   372 		moved palette creation to "DIB_CreatePalette" */
   373 		screen_pal = DIB_CreatePalette(vformat->BitsPerPixel);
   374 	}
   375 
   376 	/* Fill in some window manager capabilities */
   377 	this->info.wm_available = 1;
   378 
   379 #ifdef _WIN32_WCE
   380 	this->hidden->origRotation = -1;
   381 #endif
   382 
   383 	/* We're done! */
   384 	return(0);
   385 }
   386 
   387 /* We support any format at any dimension */
   388 SDL_Rect **DIB_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
   389 {
   390 	if ( (flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) {
   391 		return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]);
   392 	} else {
   393 		return((SDL_Rect **)-1);
   394 	}
   395 }
   396 
   397 
   398 /*
   399   Helper fn to work out which screen depth windows is currently using.
   400   15 bit mode is considered 555 format, 16 bit is 565.
   401   returns 0 for unknown mode.
   402   (Derived from code in sept 1999 Windows Developer Journal
   403   http://www.wdj.com/code/archive.html)
   404 */
   405 static int DIB_SussScreenDepth()
   406 {
   407 #ifdef NO_GETDIBITS
   408 	int depth;
   409 	HDC hdc;
   410 
   411 	hdc = GetDC(SDL_Window);
   412 	depth = GetDeviceCaps(hdc, PLANES) * GetDeviceCaps(hdc, BITSPIXEL);
   413 	ReleaseDC(SDL_Window, hdc);
   414 	return(depth);
   415 #else
   416     int depth;
   417     int dib_size;
   418     LPBITMAPINFOHEADER dib_hdr;
   419     HDC hdc;
   420     HBITMAP hbm;
   421 
   422     /* Allocate enough space for a DIB header plus palette (for
   423      * 8-bit modes) or bitfields (for 16- and 32-bit modes)
   424      */
   425     dib_size = sizeof(BITMAPINFOHEADER) + 256 * sizeof (RGBQUAD);
   426     dib_hdr = (LPBITMAPINFOHEADER) SDL_malloc(dib_size);
   427     SDL_memset(dib_hdr, 0, dib_size);
   428     dib_hdr->biSize = sizeof(BITMAPINFOHEADER);
   429     
   430     /* Get a device-dependent bitmap that's compatible with the
   431        screen.
   432      */
   433     hdc = GetDC(NULL);
   434     hbm = CreateCompatibleBitmap( hdc, 1, 1 );
   435 
   436     /* Convert the DDB to a DIB.  We need to call GetDIBits twice:
   437      * the first call just fills in the BITMAPINFOHEADER; the 
   438      * second fills in the bitfields or palette.
   439      */
   440     GetDIBits(hdc, hbm, 0, 1, NULL, (LPBITMAPINFO) dib_hdr, DIB_RGB_COLORS);
   441     GetDIBits(hdc, hbm, 0, 1, NULL, (LPBITMAPINFO) dib_hdr, DIB_RGB_COLORS);
   442     DeleteObject(hbm);
   443     ReleaseDC(NULL, hdc);
   444 
   445     depth = 0;
   446     switch( dib_hdr->biBitCount )
   447     {
   448     case 8:     depth = 8; break;
   449     case 24:    depth = 24; break;
   450     case 32:    depth = 32; break;
   451     case 16:
   452         if( dib_hdr->biCompression == BI_BITFIELDS ) {
   453             /* check the red mask */
   454             switch( ((DWORD*)((char*)dib_hdr + dib_hdr->biSize))[0] ) {
   455                 case 0xf800: depth = 16; break;   /* 565 */
   456                 case 0x7c00: depth = 15; break;   /* 555 */
   457             }
   458         }
   459     }
   460     SDL_free(dib_hdr);
   461     return depth;
   462 #endif /* NO_GETDIBITS */
   463 }
   464 
   465 
   466 /* Various screen update functions available */
   467 static void DIB_NormalUpdate(_THIS, int numrects, SDL_Rect *rects);
   468 
   469 SDL_Surface *DIB_SetVideoMode(_THIS, SDL_Surface *current,
   470 				int width, int height, int bpp, Uint32 flags)
   471 {
   472 	SDL_Surface *video;
   473 	Uint32 prev_flags;
   474 	DWORD style;
   475 	const DWORD directstyle =
   476 			(WS_POPUP);
   477 	const DWORD windowstyle = 
   478 			(WS_OVERLAPPED|WS_CAPTION|WS_SYSMENU|WS_MINIMIZEBOX);
   479 	const DWORD resizestyle =
   480 			(WS_THICKFRAME|WS_MAXIMIZEBOX);
   481 	int binfo_size;
   482 	BITMAPINFO *binfo;
   483 	HDC hdc;
   484 	RECT bounds;
   485 	int x, y;
   486 	Uint32 Rmask, Gmask, Bmask;
   487 
   488 	/* Clean up any GL context that may be hanging around */
   489 	if ( current->flags & SDL_OPENGL ) {
   490 		WIN_GL_ShutDown(this);
   491 	}
   492 	SDL_resizing = 1;
   493 
   494 	/* Recalculate the bitmasks if necessary */
   495 	if ( bpp == current->format->BitsPerPixel ) {
   496 		video = current;
   497 	} else {
   498 		switch (bpp) {
   499 			case 15:
   500 			case 16:
   501 				if ( DIB_SussScreenDepth() == 15 ) {
   502 					/* 5-5-5 */
   503 					Rmask = 0x00007c00;
   504 					Gmask = 0x000003e0;
   505 					Bmask = 0x0000001f;
   506 				} else {
   507 					/* 5-6-5 */
   508 					Rmask = 0x0000f800;
   509 					Gmask = 0x000007e0;
   510 					Bmask = 0x0000001f;
   511 				}
   512 				break;
   513 			case 24:
   514 			case 32:
   515 				/* GDI defined as 8-8-8 */
   516 				Rmask = 0x00ff0000;
   517 				Gmask = 0x0000ff00;
   518 				Bmask = 0x000000ff;
   519 				break;
   520 			default:
   521 				Rmask = 0x00000000;
   522 				Gmask = 0x00000000;
   523 				Bmask = 0x00000000;
   524 				break;
   525 		}
   526 		video = SDL_CreateRGBSurface(SDL_SWSURFACE,
   527 					0, 0, bpp, Rmask, Gmask, Bmask, 0);
   528 		if ( video == NULL ) {
   529 			SDL_OutOfMemory();
   530 			return(NULL);
   531 		}
   532 	}
   533 
   534 	/* Fill in part of the video surface */
   535 	prev_flags = video->flags;
   536 	video->flags = 0;	/* Clear flags */
   537 	video->w = width;
   538 	video->h = height;
   539 	video->pitch = SDL_CalculatePitch(video);
   540 
   541 	/* Small fix for WinCE/Win32 - when activating window
   542 	   SDL_VideoSurface is equal to zero, so activating code
   543 	   is not called properly for fullscreen windows because
   544 	   macros WINDIB_FULLSCREEN uses SDL_VideoSurface
   545 	*/
   546 	SDL_VideoSurface = video;
   547 
   548 #if defined(_WIN32_WCE)
   549 	if ( flags & SDL_FULLSCREEN )
   550 		video->flags |= SDL_FULLSCREEN;
   551 #endif
   552 
   553 #ifndef NO_CHANGEDISPLAYSETTINGS
   554 	/* Set fullscreen mode if appropriate */
   555 	if ( (flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) {
   556 		DEVMODE settings;
   557 		BOOL changed;
   558 
   559 		SDL_memset(&settings, 0, sizeof(DEVMODE));
   560 		settings.dmSize = sizeof(DEVMODE);
   561 
   562 #ifdef _WIN32_WCE
   563 		// try to rotate screen to fit requested resolution
   564 		if( this->hidden->supportRotation )
   565 		{
   566 			DWORD rotation;
   567 
   568 			// ask current mode
   569 			settings.dmFields = DM_DISPLAYORIENTATION;
   570 			ChangeDisplaySettingsEx(NULL, &settings, NULL, CDS_TEST, NULL);
   571 			rotation = settings.dmDisplayOrientation;
   572 
   573 			if( (width > GetDeviceCaps(GetDC(NULL), HORZRES))
   574 				&& (height < GetDeviceCaps(GetDC(NULL), VERTRES)))
   575 			{
   576 				switch( rotation )
   577 				{
   578 				case DMDO_0:
   579 					settings.dmDisplayOrientation = DMDO_90;
   580 					break;
   581 				case DMDO_270:
   582 					settings.dmDisplayOrientation = DMDO_180;
   583 					break;
   584 				}
   585 				if( settings.dmDisplayOrientation != rotation )
   586 				{
   587 					// go to landscape
   588 					this->hidden->origRotation = rotation;
   589 					ChangeDisplaySettingsEx(NULL,&settings,NULL,CDS_RESET,NULL);
   590 				}
   591 			}
   592 			if( (width < GetDeviceCaps(GetDC(NULL), HORZRES))
   593 				&& (height > GetDeviceCaps(GetDC(NULL), VERTRES)))
   594 			{
   595 				switch( rotation )
   596 				{
   597 				case DMDO_90:
   598 					settings.dmDisplayOrientation = DMDO_0;
   599 					break;
   600 				case DMDO_180:
   601 					settings.dmDisplayOrientation = DMDO_270;
   602 					break;
   603 				}
   604 				if( settings.dmDisplayOrientation != rotation )
   605 				{
   606 					// go to portrait
   607 					this->hidden->origRotation = rotation;
   608 					ChangeDisplaySettingsEx(NULL,&settings,NULL,CDS_RESET,NULL);
   609 				}
   610 			}
   611 
   612 		}
   613 #endif
   614 
   615 #ifndef _WIN32_WCE
   616 		settings.dmBitsPerPel = video->format->BitsPerPixel;
   617 		settings.dmPelsWidth = width;
   618 		settings.dmPelsHeight = height;
   619 		settings.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL;
   620 		if ( width <= (int)SDL_desktop_mode.dmPelsWidth &&
   621 		     height <= (int)SDL_desktop_mode.dmPelsHeight ) {
   622 			settings.dmDisplayFrequency = SDL_desktop_mode.dmDisplayFrequency;
   623 			settings.dmFields |= DM_DISPLAYFREQUENCY;
   624 		}
   625 		changed = (ChangeDisplaySettings(&settings, CDS_FULLSCREEN) == DISP_CHANGE_SUCCESSFUL);
   626 		if ( ! changed && (settings.dmFields & DM_DISPLAYFREQUENCY) ) {
   627 			settings.dmFields &= ~DM_DISPLAYFREQUENCY;
   628 			changed = (ChangeDisplaySettings(&settings, CDS_FULLSCREEN) == DISP_CHANGE_SUCCESSFUL);
   629 		}
   630 #else
   631 		changed = 1;
   632 #endif
   633 		if ( changed ) {
   634 			video->flags |= SDL_FULLSCREEN;
   635 			SDL_fullscreen_mode = settings;
   636 		}
   637 
   638 	}
   639 #endif /* !NO_CHANGEDISPLAYSETTINGS */
   640 
   641 	/* Reset the palette and create a new one if necessary */
   642 	if ( screen_pal != NULL ) {
   643 	/*	RJR: March 28, 2000
   644 		delete identity palette if switching from a palettized mode */
   645 		DeleteObject(screen_pal);
   646 		screen_pal = NULL;
   647 	}
   648 	if ( bpp <= 8 )
   649 	{
   650 	/*	RJR: March 28, 2000
   651 		create identity palette switching to a palettized mode */
   652 		screen_pal = DIB_CreatePalette(bpp);
   653 	}
   654 
   655 	style = GetWindowLong(SDL_Window, GWL_STYLE);
   656 	style &= ~(resizestyle|WS_MAXIMIZE);
   657 	if ( (video->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) {
   658 		style &= ~windowstyle;
   659 		style |= directstyle;
   660 	} else {
   661 #ifndef NO_CHANGEDISPLAYSETTINGS
   662 		if ( (prev_flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) {
   663 			ChangeDisplaySettings(NULL, 0);
   664 		}
   665 #endif
   666 		if ( flags & SDL_NOFRAME ) {
   667 			style &= ~windowstyle;
   668 			style |= directstyle;
   669 			video->flags |= SDL_NOFRAME;
   670 		} else {
   671 			style &= ~directstyle;
   672 			style |= windowstyle;
   673 			if ( flags & SDL_RESIZABLE ) {
   674 				style |= resizestyle;
   675 				video->flags |= SDL_RESIZABLE;
   676 			}
   677 		}
   678 #if WS_MAXIMIZE
   679 		if (IsZoomed(SDL_Window)) style |= WS_MAXIMIZE;
   680 #endif
   681 	}
   682 
   683 	/* DJM: Don't piss of anyone who has setup his own window */
   684 	if ( !SDL_windowid )
   685 		SetWindowLong(SDL_Window, GWL_STYLE, style);
   686 
   687 	/* Delete the old bitmap if necessary */
   688 	if ( screen_bmp != NULL ) {
   689 		DeleteObject(screen_bmp);
   690 	}
   691 	if ( ! (flags & SDL_OPENGL) ) {
   692 		BOOL is16bitmode = (video->format->BytesPerPixel == 2);
   693 
   694 		/* Suss out the bitmap info header */
   695 		binfo_size = sizeof(*binfo);
   696 		if( is16bitmode ) {
   697 			/* 16bit modes, palette area used for rgb bitmasks */
   698 			binfo_size += 3*sizeof(DWORD);
   699 		} else if ( video->format->palette ) {
   700 			binfo_size += video->format->palette->ncolors *
   701 							sizeof(RGBQUAD);
   702 		}
   703 		binfo = (BITMAPINFO *)SDL_malloc(binfo_size);
   704 		if ( ! binfo ) {
   705 			if ( video != current ) {
   706 				SDL_FreeSurface(video);
   707 			}
   708 			SDL_OutOfMemory();
   709 			return(NULL);
   710 		}
   711 
   712 		binfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
   713 		binfo->bmiHeader.biWidth = video->w;
   714 		binfo->bmiHeader.biHeight = -video->h;	/* -ve for topdown bitmap */
   715 		binfo->bmiHeader.biPlanes = 1;
   716 		binfo->bmiHeader.biSizeImage = video->h * video->pitch;
   717 		binfo->bmiHeader.biXPelsPerMeter = 0;
   718 		binfo->bmiHeader.biYPelsPerMeter = 0;
   719 		binfo->bmiHeader.biClrUsed = 0;
   720 		binfo->bmiHeader.biClrImportant = 0;
   721 		binfo->bmiHeader.biBitCount = video->format->BitsPerPixel;
   722 
   723 		if ( is16bitmode ) {
   724 			/* BI_BITFIELDS tells CreateDIBSection about the rgb masks in the palette */
   725 			binfo->bmiHeader.biCompression = BI_BITFIELDS;
   726 			((Uint32*)binfo->bmiColors)[0] = video->format->Rmask;
   727 			((Uint32*)binfo->bmiColors)[1] = video->format->Gmask;
   728 			((Uint32*)binfo->bmiColors)[2] = video->format->Bmask;
   729 		} else {
   730 			binfo->bmiHeader.biCompression = BI_RGB;	/* BI_BITFIELDS for 565 vs 555 */
   731 			if ( video->format->palette ) {
   732 				SDL_memset(binfo->bmiColors, 0,
   733 					video->format->palette->ncolors*sizeof(RGBQUAD));
   734 			}
   735 		}
   736 
   737 		/* Create the offscreen bitmap buffer */
   738 		hdc = GetDC(SDL_Window);
   739 		screen_bmp = CreateDIBSection(hdc, binfo, DIB_RGB_COLORS,
   740 					(void **)(&video->pixels), NULL, 0);
   741 		ReleaseDC(SDL_Window, hdc);
   742 		SDL_free(binfo);
   743 		if ( screen_bmp == NULL ) {
   744 			if ( video != current ) {
   745 				SDL_FreeSurface(video);
   746 			}
   747 			SDL_SetError("Couldn't create DIB section");
   748 			return(NULL);
   749 		}
   750 		this->UpdateRects = DIB_NormalUpdate;
   751 
   752 		/* Set video surface flags */
   753 		if ( bpp <= 8 ) {
   754 			/* BitBlt() maps colors for us */
   755 			video->flags |= SDL_HWPALETTE;
   756 		}
   757 	}
   758 #ifndef _WIN32_WCE
   759 	/* Resize the window */
   760 	if ( !SDL_windowid && !IsZoomed(SDL_Window) ) {
   761 #else
   762 	if ( !SDL_windowid ) {
   763 #endif
   764 		HWND top;
   765 		UINT swp_flags;
   766 		const char *window = NULL;
   767 		const char *center = NULL;
   768 
   769 		if ( !SDL_windowX && !SDL_windowY ) {
   770 			window = SDL_getenv("SDL_VIDEO_WINDOW_POS");
   771 			center = SDL_getenv("SDL_VIDEO_CENTERED");
   772 			if ( window ) {
   773 				if ( SDL_sscanf(window, "%d,%d", &x, &y) == 2 ) {
   774 					SDL_windowX = x;
   775 					SDL_windowY = y;
   776 				}
   777 				if ( SDL_strcmp(window, "center") == 0 ) {
   778 					center = window;
   779 				}
   780 			}
   781 		}
   782 		swp_flags = (SWP_NOCOPYBITS | SWP_SHOWWINDOW);
   783 
   784 		bounds.left = SDL_windowX;
   785 		bounds.top = SDL_windowY;
   786 		bounds.right = SDL_windowX+video->w;
   787 		bounds.bottom = SDL_windowY+video->h;
   788 		AdjustWindowRectEx(&bounds, GetWindowLong(SDL_Window, GWL_STYLE), (GetMenu(SDL_Window) != NULL), 0);
   789 		width = bounds.right-bounds.left;
   790 		height = bounds.bottom-bounds.top;
   791 		if ( (flags & SDL_FULLSCREEN) ) {
   792 			x = (GetSystemMetrics(SM_CXSCREEN)-width)/2;
   793 			y = (GetSystemMetrics(SM_CYSCREEN)-height)/2;
   794 		} else if ( center ) {
   795 			x = (GetSystemMetrics(SM_CXSCREEN)-width)/2;
   796 			y = (GetSystemMetrics(SM_CYSCREEN)-height)/2;
   797 		} else if ( SDL_windowX || SDL_windowY || window ) {
   798 			x = bounds.left;
   799 			y = bounds.top;
   800 		} else {
   801 			x = y = -1;
   802 			swp_flags |= SWP_NOMOVE;
   803 		}
   804 		if ( flags & SDL_FULLSCREEN ) {
   805 			top = HWND_TOPMOST;
   806 		} else {
   807 			top = HWND_NOTOPMOST;
   808 		}
   809 		SetWindowPos(SDL_Window, top, x, y, width, height, swp_flags);
   810 		if ( !(flags & SDL_FULLSCREEN) ) {
   811 			SDL_windowX = SDL_bounds.left;
   812 			SDL_windowY = SDL_bounds.top;
   813 		}
   814 		SetForegroundWindow(SDL_Window);
   815 	}
   816 	SDL_resizing = 0;
   817 
   818 	/* Set up for OpenGL */
   819 	if ( flags & SDL_OPENGL ) {
   820 		if ( WIN_GL_SetupWindow(this) < 0 ) {
   821 			return(NULL);
   822 		}
   823 		video->flags |= SDL_OPENGL;
   824 	}
   825 
   826 	/* JC 14 Mar 2006
   827 		Flush the message loop or this can cause big problems later
   828 		Especially if the user decides to use dialog boxes or assert()!
   829 	*/
   830 	WIN_FlushMessageQueue();
   831 
   832 	/* We're live! */
   833 	return(video);
   834 }
   835 
   836 /* We don't actually allow hardware surfaces in the DIB driver */
   837 static int DIB_AllocHWSurface(_THIS, SDL_Surface *surface)
   838 {
   839 	return(-1);
   840 }
   841 static void DIB_FreeHWSurface(_THIS, SDL_Surface *surface)
   842 {
   843 	return;
   844 }
   845 static int DIB_LockHWSurface(_THIS, SDL_Surface *surface)
   846 {
   847 	return(0);
   848 }
   849 static void DIB_UnlockHWSurface(_THIS, SDL_Surface *surface)
   850 {
   851 	return;
   852 }
   853 
   854 static void DIB_NormalUpdate(_THIS, int numrects, SDL_Rect *rects)
   855 {
   856 	HDC hdc, mdc;
   857 	int i;
   858 
   859 	hdc = GetDC(SDL_Window);
   860 	if ( screen_pal ) {
   861 		SelectPalette(hdc, screen_pal, FALSE);
   862 	}
   863 	mdc = CreateCompatibleDC(hdc);
   864 	SelectObject(mdc, screen_bmp);
   865 	for ( i=0; i<numrects; ++i ) {
   866 		BitBlt(hdc, rects[i].x, rects[i].y, rects[i].w, rects[i].h,
   867 					mdc, rects[i].x, rects[i].y, SRCCOPY);
   868 	}
   869 	DeleteDC(mdc);
   870 	ReleaseDC(SDL_Window, hdc);
   871 }
   872 
   873 
   874 int DIB_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
   875 {
   876 #if !defined(_WIN32_WCE) || (_WIN32_WCE >= 400)
   877 	HDC hdc, mdc;
   878 	RGBQUAD *pal;
   879 #else
   880 	HDC hdc;
   881 #endif
   882 	int i;
   883 
   884 	/* Update the display palette */
   885 	hdc = GetDC(SDL_Window);
   886 	if ( screen_pal ) {
   887 		PALETTEENTRY *entries;
   888 
   889 		entries = SDL_stack_alloc(PALETTEENTRY, ncolors);
   890 		for ( i=0; i<ncolors; ++i ) {
   891 			entries[i].peRed   = colors[i].r;
   892 			entries[i].peGreen = colors[i].g;
   893 			entries[i].peBlue  = colors[i].b;
   894 			entries[i].peFlags = PC_NOCOLLAPSE;
   895 		}
   896 		SetPaletteEntries(screen_pal, firstcolor, ncolors, entries);
   897 		SelectPalette(hdc, screen_pal, FALSE);
   898 		RealizePalette(hdc);
   899 		SDL_stack_free(entries);
   900 	}
   901 
   902 #if !defined(_WIN32_WCE) || (_WIN32_WCE >= 400)
   903 	/* Copy palette colors into DIB palette */
   904 	pal = SDL_stack_alloc(RGBQUAD, ncolors);
   905 	for ( i=0; i<ncolors; ++i ) {
   906 		pal[i].rgbRed = colors[i].r;
   907 		pal[i].rgbGreen = colors[i].g;
   908 		pal[i].rgbBlue = colors[i].b;
   909 		pal[i].rgbReserved = 0;
   910 	}
   911 
   912 	/* Set the DIB palette and update the display */
   913 	mdc = CreateCompatibleDC(hdc);
   914 	SelectObject(mdc, screen_bmp);
   915 	SetDIBColorTable(mdc, firstcolor, ncolors, pal);
   916 	BitBlt(hdc, 0, 0, this->screen->w, this->screen->h,
   917 	       mdc, 0, 0, SRCCOPY);
   918 	DeleteDC(mdc);
   919 	SDL_stack_free(pal);
   920 #endif
   921 	ReleaseDC(SDL_Window, hdc);
   922 	return(1);
   923 }
   924 
   925 
   926 static void DIB_CheckGamma(_THIS)
   927 {
   928 #ifndef NO_GAMMA_SUPPORT
   929 	HDC hdc;
   930 	WORD ramp[3*256];
   931 
   932 	/* If we fail to get gamma, disable gamma control */
   933 	hdc = GetDC(SDL_Window);
   934 	if ( ! GetDeviceGammaRamp(hdc, ramp) ) {
   935 		this->GetGammaRamp = NULL;
   936 		this->SetGammaRamp = NULL;
   937 	}
   938 	ReleaseDC(SDL_Window, hdc);
   939 #endif /* !NO_GAMMA_SUPPORT */
   940 }
   941 void DIB_SwapGamma(_THIS)
   942 {
   943 #ifndef NO_GAMMA_SUPPORT
   944 	HDC hdc;
   945 
   946 	if ( gamma_saved ) {
   947 		hdc = GetDC(SDL_Window);
   948 		if ( SDL_GetAppState() & SDL_APPINPUTFOCUS ) {
   949 			/* About to leave active state, restore gamma */
   950 			SetDeviceGammaRamp(hdc, gamma_saved);
   951 		} else {
   952 			/* About to enter active state, set game gamma */
   953 			GetDeviceGammaRamp(hdc, gamma_saved);
   954 			SetDeviceGammaRamp(hdc, this->gamma);
   955 		}
   956 		ReleaseDC(SDL_Window, hdc);
   957 	}
   958 #endif /* !NO_GAMMA_SUPPORT */
   959 }
   960 void DIB_QuitGamma(_THIS)
   961 {
   962 #ifndef NO_GAMMA_SUPPORT
   963 	if ( gamma_saved ) {
   964 		/* Restore the original gamma if necessary */
   965 		if ( SDL_GetAppState() & SDL_APPINPUTFOCUS ) {
   966 			HDC hdc;
   967 
   968 			hdc = GetDC(SDL_Window);
   969 			SetDeviceGammaRamp(hdc, gamma_saved);
   970 			ReleaseDC(SDL_Window, hdc);
   971 		}
   972 
   973 		/* Free the saved gamma memory */
   974 		SDL_free(gamma_saved);
   975 		gamma_saved = 0;
   976 	}
   977 #endif /* !NO_GAMMA_SUPPORT */
   978 }
   979 
   980 int DIB_SetGammaRamp(_THIS, Uint16 *ramp)
   981 {
   982 #ifdef NO_GAMMA_SUPPORT
   983 	SDL_SetError("SDL compiled without gamma ramp support");
   984 	return -1;
   985 #else
   986 	HDC hdc;
   987 	BOOL succeeded;
   988 
   989 	/* Set the ramp for the display */
   990 	if ( ! gamma_saved ) {
   991 		gamma_saved = (WORD *)SDL_malloc(3*256*sizeof(*gamma_saved));
   992 		if ( ! gamma_saved ) {
   993 			SDL_OutOfMemory();
   994 			return -1;
   995 		}
   996 		hdc = GetDC(SDL_Window);
   997 		GetDeviceGammaRamp(hdc, gamma_saved);
   998 		ReleaseDC(SDL_Window, hdc);
   999 	}
  1000 	if ( SDL_GetAppState() & SDL_APPINPUTFOCUS ) {
  1001 		hdc = GetDC(SDL_Window);
  1002 		succeeded = SetDeviceGammaRamp(hdc, ramp);
  1003 		ReleaseDC(SDL_Window, hdc);
  1004 	} else {
  1005 		succeeded = TRUE;
  1006 	}
  1007 	return succeeded ? 0 : -1;
  1008 #endif /* !NO_GAMMA_SUPPORT */
  1009 }
  1010 
  1011 int DIB_GetGammaRamp(_THIS, Uint16 *ramp)
  1012 {
  1013 #ifdef NO_GAMMA_SUPPORT
  1014 	SDL_SetError("SDL compiled without gamma ramp support");
  1015 	return -1;
  1016 #else
  1017 	HDC hdc;
  1018 	BOOL succeeded;
  1019 
  1020 	/* Get the ramp from the display */
  1021 	hdc = GetDC(SDL_Window);
  1022 	succeeded = GetDeviceGammaRamp(hdc, ramp);
  1023 	ReleaseDC(SDL_Window, hdc);
  1024 	return succeeded ? 0 : -1;
  1025 #endif /* !NO_GAMMA_SUPPORT */
  1026 }
  1027 
  1028 void DIB_VideoQuit(_THIS)
  1029 {
  1030 	int i, j;
  1031 
  1032 	/* Destroy the window and everything associated with it */
  1033 	if ( SDL_Window ) {
  1034 		/* Delete the screen bitmap (also frees screen->pixels) */
  1035 		if ( this->screen ) {
  1036 #ifndef NO_CHANGEDISPLAYSETTINGS
  1037 			if ( this->screen->flags & SDL_FULLSCREEN ) {
  1038 				ChangeDisplaySettings(NULL, 0);
  1039 				ShowWindow(SDL_Window, SW_HIDE);
  1040 			}
  1041 #endif
  1042 			if ( this->screen->flags & SDL_OPENGL ) {
  1043 				WIN_GL_ShutDown(this);
  1044 			}
  1045 			this->screen->pixels = NULL;
  1046 		}
  1047 		if ( screen_bmp ) {
  1048 			DeleteObject(screen_bmp);
  1049 			screen_bmp = NULL;
  1050 		}
  1051 		if ( screen_icn ) {
  1052 			DestroyIcon(screen_icn);
  1053 			screen_icn = NULL;
  1054 		}
  1055 		DIB_QuitGamma(this);
  1056 		DIB_DestroyWindow(this);
  1057 
  1058 		SDL_Window = NULL;
  1059 
  1060 #if defined(_WIN32_WCE)
  1061 
  1062 // Unload wince aygshell library to prevent leak
  1063 		if( aygshell ) 
  1064 		{
  1065 			FreeLibrary(aygshell);
  1066 			aygshell = NULL;
  1067 		}
  1068 #endif
  1069 	}
  1070 
  1071 	for ( i=0; i < SDL_arraysize(SDL_modelist); ++i ) {
  1072 		if ( !SDL_modelist[i] ) {
  1073 			continue;
  1074 		}
  1075 		for ( j=0; SDL_modelist[i][j]; ++j ) {
  1076 			SDL_free(SDL_modelist[i][j]);
  1077 		}
  1078 		SDL_free(SDL_modelist[i]);
  1079 		SDL_modelist[i] = NULL;
  1080 		SDL_nummodes[i] = 0;
  1081 	}
  1082 }
  1083 
  1084 /* Exported for the windows message loop only */
  1085 static void DIB_FocusPalette(_THIS, int foreground)
  1086 {
  1087 	if ( screen_pal != NULL ) {
  1088 		HDC hdc;
  1089 
  1090 		hdc = GetDC(SDL_Window);
  1091 		SelectPalette(hdc, screen_pal, FALSE);
  1092 		if ( RealizePalette(hdc) )
  1093 			InvalidateRect(SDL_Window, NULL, FALSE);
  1094 		ReleaseDC(SDL_Window, hdc);
  1095 	}
  1096 }
  1097 static void DIB_RealizePalette(_THIS)
  1098 {
  1099 	DIB_FocusPalette(this, 1);
  1100 }
  1101 static void DIB_PaletteChanged(_THIS, HWND window)
  1102 {
  1103 	if ( window != SDL_Window ) {
  1104 		DIB_FocusPalette(this, 0);
  1105 	}
  1106 }
  1107 
  1108 /* Exported for the windows message loop only */
  1109 static void DIB_WinPAINT(_THIS, HDC hdc)
  1110 {
  1111 	HDC mdc;
  1112 
  1113 	if ( screen_pal ) {
  1114 		SelectPalette(hdc, screen_pal, FALSE);
  1115 	}
  1116 	mdc = CreateCompatibleDC(hdc);
  1117 	SelectObject(mdc, screen_bmp);
  1118 	BitBlt(hdc, 0, 0, SDL_VideoSurface->w, SDL_VideoSurface->h,
  1119 							mdc, 0, 0, SRCCOPY);
  1120 	DeleteDC(mdc);
  1121 }
  1122 
  1123 /* Stub in case DirectX isn't available */
  1124 #if !SDL_AUDIO_DRIVER_DSOUND
  1125 void DX5_SoundFocus(HWND hwnd)
  1126 {
  1127 	return;
  1128 }
  1129 #endif